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Winter Weather in Sydney New South Wales, Australia

Daily high temperatures are around 64°F, rarely falling below 57°F or exceeding 75°F. The lowest daily average high temperature is 62°F on July 12.

Daily low temperatures are around 49°F, rarely falling below 42°F or exceeding 58°F. The lowest daily average low temperature is 47°F on July 19.

For reference, on January 25, the hottest day of the year, temperatures in Sydney typically range from 68°F to 80°F, while on July 18, the coldest day of the year, they range from 47°F to 62°F.

Average High and Low Temperature in the Winter in Sydney

Average High and Low Temperature in the Winter in SydneyJunJulAug40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°FFallSpringJul 1262°FJul 1262°F47°F47°FJun 165°FJun 165°F51°F51°FAug 3167°FAug 3167°F51°F51°FJul 162°FJul 162°F48°F48°FAug 163°FAug 163°F48°F48°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average winter temperatures. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in the Winter in Sydney

Average Hourly Temperature in the Winter in SydneyJunJulAug12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMFallSpringNowNowcoldcoldcoolcomfortablecomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Río Branco, Uruguay (7,583 miles away); Curitiba, Paraná, Brazil (8,134 miles); and Rabat, Morocco (11,193 miles) are the far-away foreign places with temperatures most similar to Sydney (view comparison).

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The winter in Sydney experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 35% to 23%. The lowest chance of overcast or mostly cloudy conditions is 20% on August 12.

The clearest day of the winter is August 12, with clear, mostly clear, or partly cloudy conditions 80% of the time.

For reference, on November 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 38%, while on August 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 80%.

Cloud Cover Categories in the Winter in Sydney

Cloud Cover Categories in the Winter in SydneyJunJulAug0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%FallSpringNov 2162%Nov 2162%Jun 165%Jun 165%Aug 3177%Aug 3177%Jul 172%Jul 172%Aug 178%Aug 178%NowNowclearmostly clearpartly cloudyovercastmostly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Sydney, the chance of a wet day over the course of the winter is decreasing, starting the season at 23% and ending it at 18%.

For reference, the year's highest daily chance of a wet day is 30% on January 31, and its lowest chance is 16% on August 12.

Probability of Precipitation in the Winter in Sydney

Probability of Precipitation in the Winter in SydneyJunJulAug0%0%5%5%10%10%15%15%20%20%25%25%FallSpringJun 423%Jun 423%Aug 1216%Aug 1216%Aug 3118%Aug 3118%Jul 120%Jul 120%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the winter in Sydney is rapidly decreasing, starting the season at 2.8 inches, when it rarely exceeds 5.7 inches or falls below 0.5 inches, and ending the season at 1.8 inches, when it rarely exceeds 4.7 inches or falls below 0.2 inches.

Average Monthly Rainfall in the Winter in Sydney

Average Monthly Rainfall in the Winter in SydneyJunJulAug0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 inFallSpringJun 12.8 inJun 12.8 inAug 311.8 inAug 311.8 inJul 12.0 inJul 12.0 inAug 12.1 inAug 12.1 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of the winter in Sydney, the length of the day is rapidly increasing. From the start to the end of the season, the length of the day increases by 1 hour, 19 minutes, implying an average daily increase of 52 seconds, and weekly increase of 6 minutes, 6 seconds.

The shortest day of the winter is June 21, with 9 hours, 54 minutes of daylight and the longest day is August 31, with 11 hours, 22 minutes of daylight.

Hours of Daylight and Twilight in the Winter in Sydney

Hours of Daylight and Twilight in the Winter in SydneyJunJulAug0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrFallSpringJun 219 hr, 54 minJun 219 hr, 54 mindaydaydaydaynightAug 3111 hr, 22 minAug 3111 hr, 22 minAug 110 hr, 28 minAug 110 hr, 28 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The latest sunrise of the winter in Sydney is 7:01 AM on June 30 and the earliest sunrise is 46 minutes earlier at 6:14 AM on August 31.

The earliest sunset is 4:52 PM on June 11 and the latest sunset is 44 minutes later at 5:36 PM on August 31.

Daylight saving time is observed in Sydney during 2024, but it neither starts nor ends during the winter, so the entire season is in daylight saving time.

For reference, on December 21, the longest day of the year, the Sun rises at 5:40 AM and sets 14 hours, 25 minutes later, at 8:05 PM, while on June 20, the shortest day of the year, it rises at 6:59 AM and sets 9 hours, 54 minutes later, at 4:53 PM.

Sunrise & Sunset with Twilight in the Winter in Sydney

Sunrise & Sunset with Twilight in the Winter in SydneyJunJulAug12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMFallSpring6:14 AM6:14 AMAug 315:36 PMAug 315:36 PM6:56 AM6:56 AMJun 114:52 PMJun 114:52 PM7:01 AM7:01 AMJun 304:56 PMJun 304:56 PM6:47 AM6:47 AMAug 15:15 PMAug 15:15 PMSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day in the winter. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in the Winter in Sydney

Solar Elevation and Azimuth in the Winter in SydneyJunJulAug12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMFallSpring0010202030305000101020303040NowNow
northeastsouthwest
Solar elevation and azimuth in the the winter of 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for the winter of 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in the Winter in Sydney

Moon Rise, Set & Phases in the Winter in SydneyJunJulAug12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMFallSpringMay 81:23 PMMay 81:23 PMMay 2311:54 PMMay 2311:54 PMJun 610:38 PMJun 610:38 PMJun 2211:09 AMJun 2211:09 AMJul 68:58 AMJul 68:58 AMJul 218:18 PMJul 218:18 PMAug 49:14 PMAug 49:14 PMAug 204:26 AMAug 204:26 AMSep 311:56 AMSep 311:56 AMSep 1812:35 PMSep 1812:35 PM6:24 AM6:24 AM4:25 PM4:25 PM7:19 AM7:19 AM6:28 AM6:28 AM4:18 PM4:18 PM3:49 PM3:49 PM7:12 AM7:12 AM7:21 AM7:21 AM4:42 PM4:42 PM7:39 AM7:39 AM4:55 PM4:55 PM4:45 PM4:45 PM6:49 AM6:49 AM6:18 AM6:18 AM5:45 PM5:45 PM5:59 PM5:59 PM6:20 AM6:20 AMNowNow
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Sydney is essentially constant during the winter, remaining around 0% throughout.

The lowest chance of a muggy day during the winter is 0% on July 10.

For reference, on February 5, the muggiest day of the year, there are muggy conditions 41% of the time, while on June 7, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in the Winter in Sydney

Humidity Comfort Levels in the Winter in SydneyJunJulAug0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%FallSpringJul 100%Jul 100%Jun 10%Jun 10%Aug 310%Aug 310%Aug 10%Aug 10%humidhumidcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Sydney is essentially constant during the winter, remaining within 0.2 miles per hour of 8.1 miles per hour throughout.

For reference, on August 1, the windiest day of the year, the daily average wind speed is 8.2 miles per hour, while on April 7, the calmest day of the year, the daily average wind speed is 7.3 miles per hour.

The highest daily average wind speed during the winter is 8.2 miles per hour on August 1.

Average Wind Speed in the Winter in Sydney

Average Wind Speed in the Winter in SydneyJunJulAug0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphFallSpringAug 18.2 mphAug 18.2 mphJun 17.9 mphJun 17.9 mphAug 318.0 mphAug 318.0 mphJul 18.2 mphJul 18.2 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Sydney throughout the winter is predominantly from the west, with a peak proportion of 44% on July 2.

Wind Direction in the Winter in Sydney

Wind Direction in the Winter in SydneySWNJunJulAug0%100%20%80%40%60%60%40%80%20%100%0%FallSpringNowNowwestsouthnortheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Sydney is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Sydney is decreasing during the winter, falling by 4°F, from 68°F to 64°F, over the course of the season.

The lowest average surface water temperature during the winter is 64°F on August 17.

Average Water Temperature in the Winter in Sydney

Average Water Temperature in the Winter in SydneyJunJulAug60°F60°F62°F62°F64°F64°F66°F66°F68°F68°F70°F70°F72°F72°F74°F74°FFallSpringAug 1764°FAug 1764°FJun 168°FJun 168°FAug 3164°FAug 3164°FJul 165°FJul 165°FAug 164°FAug 164°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Sydney are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in the Winter in Sydney

Time Spent in Various Temperature Bands and the Growing Season in the Winter in SydneyJunJulAug0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%FallSpring100%Jul 17100%Jul 17NowNowcoldcoolcomfortablevery coldwarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Sydney are very rapidly decreasing during the winter, decreasing by 4,753°F, from 5,134°F to 381°F, over the course of the season.

Growing Degree Days in the Winter in Sydney

Growing Degree Days in the Winter in SydneyJunJulAug1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°FFallSpringJun 15,134°FJun 15,134°FAug 31381°FAug 31381°FJul 10°FJul 10°FAug 1162°FAug 1162°FNowNow
The average growing degree days accumulated over the course of the winter, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Sydney is rapidly increasing during the winter, rising by 1.8 kWh, from 2.7 kWh to 4.5 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 2.6 kWh on June 15.

Average Daily Incident Shortwave Solar Energy in the Winter in Sydney

Average Daily Incident Shortwave Solar Energy in the Winter in SydneyJunJulAug0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhFallSpringJun 152.6 kWhJun 152.6 kWhAug 314.5 kWhAug 314.5 kWhJul 12.7 kWhJul 12.7 kWhAug 13.4 kWhAug 13.4 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Sydney are -33.868 deg latitude, 151.207 deg longitude, and 190 ft elevation.

The topography within 2 miles of Sydney contains only modest variations in elevation, with a maximum elevation change of 387 feet and an average elevation above sea level of 69 feet. Within 10 miles contains only modest variations in elevation (728 feet). Within 50 miles contains significant variations in elevation (3,232 feet).

The area within 2 miles of Sydney is covered by artificial surfaces (54%), water (29%), and sparse vegetation (12%), within 10 miles by artificial surfaces (38%) and water (35%), and within 50 miles by water (50%) and trees (38%).

This report illustrates the typical weather in Sydney, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Sydney.

For each station, the records are corrected for the elevation difference between that station and Sydney according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Sydney is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Sydney and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Sydney and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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